It is a pity to discard or sell inner tubes replaced on locomotives. After the rubber inner tube is slightly machined, it can be used for many purposes. As a seat cushion, the inner tube of the tractor is properly inflated, and is tied into an oval shape with a rope and fixed on the driver's seat board. When the vehicle is operated, it is comfortable and can absorb shock. Raise the water tank mouth to take a long enough inner tube and tie it around the mouth of the water tank; cut the upper end into an inclined plane, before lowering and raising the height. In this way, the cooling water of the cooling water of the walking tractor can be reduced, and the boiling hand can be prevented from splashing out of the face or hands of the scald hand. The mat battery is covered with old inner tubes around and under the battery bracket, which can buffer the violent vibration of the battery during running, and prolong the service life of the battery housing. The brake cups of the brake shoe brakes are easy to wear. If you replace the brake pads with a new one, you can still cut a round inner tube and combine it with a new one. The use period of the cup is greatly extended. Set the inner tube to cut the valve of the old inner tube, cut it along the inner diameter of the tire, and put it on the new inner tube to extend the service life of the inner tube by more than 1/3. To add a bucket to cut a small tractor's old inner tube, one end is tied with a wire, and it becomes a simple addition bucket. When not in use, it is folded in the tool box under the driver's seat. It occupies less space, is not afraid of pressure, and is convenient and practical.